5-Cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Cyano-3-iodo-2-methyl-4-(trifluoromethoxy)pyridine
4-Cyano-5-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Cyano-5-iodo-3-methyl-6-(trifluoromethoxy)pyridine
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